I have a question about some of the buttons and symbols on this layout.

- The heart button next to a post might be a "like" kind of thing, but what does the button with the downward arrow do?

- The flame symbol next to the number of comments a post got, what is that for? It seems to count something, not sure what.

- In the ads they said that we can now block people. So how can I block Spiegel?